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LTE Module Series
EC25&EC21 AT Commands Manual
EC25&EC21_AT_Commands_Manual 193 / 231
Parameter
12.7. AT+QDAI Digital Audio Interface Configuration
The command is used to configure the digital audio interface. When
<io>
=1, customers can define the
PCM formats by themselves. In the following conditions, the module can be used directly with default
settings (master mode, short-synchronization, 2048K clock frequency, 16-bit liner data format, 8K
sampling rate).
When
<io>
=2, and the external codec chip linked with PCM interface is the NAU8814 model and
configurable through the I2C
when
<io>
=3, and the external codec chip linked with PCM interface is the ALC5616 model and
configurable through the I2C
when
<io>
=5 and the external codec chip linked with PCM interface is the TLV320AIC3104 model
and configurable through the I2C
If there is any error related to ME functionality:
+CME ERROR: <err>
Maximum Response Time
300ms
Reference
Quectel
<mode>
Numeric type. Indicates the current configured audio mode
0 Echo canceller, noise suppressor, digital gain and calibration parameter for Handset
1 Echo canceller, noise suppressor, digital gain and calibration parameter for Headset
2 Echo canceller, noise suppressor, digital gain and calibration parameter for Speaker
AT+QDAI Digital Audio Interface Configuration
Test Command
AT+QDAI=?
Response
+QDAI:
(list of supported
<io>
s)
,
(list of supported
<mode>
s)
,
(list of supported
<fsync>
s)
,
(list of supported
<clock>
s)
,
(list of supported
<format>
s)
,
(list of supported
<sample>
s)
,
(list
of
supported
<num_slots>
s)
,
(list
of
supported
<slot_mapping>
s)
OK
Read Command
AT+QDAI?
Response
+QDAI:
<io>[,<mode>,<fsync>,<clock>,<format>,<sample>,<num
_slots>,<slot_mapping>]